Xu Zhang; Ye Lu; YongHeng Zhao
Source Publicationchinesejournalofastronomyandastrophysics
AbstractWe suggest a two-dimensional time dependent analytic model to describe the accretion of matter onto a neutron star moving at a high speed across the ejecta left in the aftermath of a supernova explosion. The formation of a strange star resulting from the accretion is also addressed. The newborn neutron star is assumed to move outward at a kick Velocity of v(ns) similar to 10(3) km s(-1), and the accretion flow is treated as a dust flow. When the neutron star travels across the ejecta with high speed, it sweeps up material, and when the accreted mass has reached a critical value, the neutron star will undergo a phase transition, for instance, to become a strange star. Our results show that the accretion rate decreases in a complicated way in time, not just a power law dependence: it drops much faster than the power law derived by Colpi et al. We also found that the total accreted mass and the phase transition of the neutron star depend sensitively on the velocity of supernova ejecta.
Document Type期刊论文
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Xu Zhang,Ye Lu,YongHeng Zhao. accretionbyaneutronstarmovingatahighkickvelocityinthesupernovaejecta[J]. chinesejournalofastronomyandastrophysics,2007,7(1):91.
APA Xu Zhang,Ye Lu,&YongHeng Zhao.(2007).accretionbyaneutronstarmovingatahighkickvelocityinthesupernovaejecta.chinesejournalofastronomyandastrophysics,7(1),91.
MLA Xu Zhang,et al."accretionbyaneutronstarmovingatahighkickvelocityinthesupernovaejecta".chinesejournalofastronomyandastrophysics 7.1(2007):91.
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